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Finding the Fourth Proportional to 11,458.76, 15,820.62 and 8,801.36

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Solution

The fourth proportional to 11,458.76, 15,820.62 and 8,801.36 is: 12,151.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,458.76 : 15,820.62 = 8,801.36 : x
  2. Step 2: Convert to fraction form
    11,458.76/15,820.62 = 8,801.36/x
  3. Step 3: Cross multiply
    11,458.76x = 15,820.62 × 8,801.36
  4. Step 4: Simplify right side
    11,458.76x = 139,242,972.04
  5. Step 5: Solve for x
    x = 139,242,972.04/11,458.76
  6. Step 6: Final answer
    x = 12,151.66

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.